{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,18]],"date-time":"2026-02-18T23:48:00Z","timestamp":1771458480528,"version":"3.50.1"},"reference-count":25,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2021,5,13]],"date-time":"2021-05-13T00:00:00Z","timestamp":1620864000000},"content-version":"vor","delay-in-days":12,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,8,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>\u2002<\/jats:title>\n                  <jats:p>Investigations of networked public spheres often examine the structures of online platforms by studying users\u2019 interactions. These works suggest that users\u2019 interactions can lead to cyberbalkanization when interlocutors form homophilous communities that typically have few connections to others with opposing ideologies. Yet, rather than assuming communities are isolated, this study examines community-level interactions to reveal how communities in online discourses are more interdependent than previously theorized. Specifically, we examine how such interactions influence the evolution of topics overtime in source and target communities. Our analysis found that (a) the size of a source community (the community that initiates interactions) and a target community (the community that receives interactions), (b) the stability of the source community, and (c) the volume of mentions from a source community to a target community predicts the level of influence one community has on another\u2019s discussion topics. We argue this has significant theoretical and practical implications.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Lay Summary<\/jats:title>\n                  <jats:p>Political discussions online, especially those in the United States, seem to range between harmonious discussions of likeminded people and heated debates that end with few, if any, who have changed their minds. Researchers have often examined these balkanized\/polarized situations by studying online communities as isolated echo chambers of opinion. Our study focuses on the interactions between online communities who have different worldviews. We examine communities engaged in the global refugee crisis. We consider how the inter-community interactions influence the agenda of the respective communities. Our longitudinal analysis on the one hand confirms previous studies, namely that intra-community interactions indeed resemble echo chambers. On the other hand, we also find that there is interdependence in the inter-community discussion topics, albeit some communities had greater influence on other communities\u2019 discussion topics. For example, larger, more stable communities command more influence.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/jcmc\/zmab002","type":"journal-article","created":{"date-parts":[[2021,2,10]],"date-time":"2021-02-10T19:33:02Z","timestamp":1612985582000},"page":"148-166","source":"Crossref","is-referenced-by-count":12,"title":["The Influence of Interdependence in Networked Publics Spheres: How Community-Level Interactions Affect the Evolution of Topics in Online Discourse"],"prefix":"10.1093","volume":"26","author":[{"given":"Aimei","family":"Yang","sequence":"first","affiliation":[{"name":"Annenberg School for Communication & Journalism, University of Southern California, Los Angeles, CA 90089, USA"}]},{"given":"Ian Myoungsu","family":"Choi","sequence":"additional","affiliation":[{"name":"Information Sciences Institute, Viterbi School of Engineering, University of Southern California, Marina Del Rey, CA 90292, USA"}]},{"given":"Andr\u00e9s","family":"Abeliuk","sequence":"additional","affiliation":[{"name":"Department of Computer Science, University of Chile, Minneapolis, MN 55455, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8032-4256","authenticated-orcid":false,"given":"Adam","family":"Saffer","sequence":"additional","affiliation":[{"name":"Hubbard School of Journalism and Mass Communication, University of Minnesota, Minneapolis, MN 55455, USA"}]}],"member":"286","published-online":{"date-parts":[[2021,5,13]]},"reference":[{"issue":"3","key":"2021080513412980500_zmab002-B1","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1080\/1369118X.2012.756050","article-title":"National politics on Twitter: Structures and topics of a networked public sphere","volume":"16","author":"Ausserhofer","year":"2013","journal-title":"Information, Communication & Society"},{"issue":"10","key":"2021080513412980500_zmab002-B2","doi-asserted-by":"crossref","first-page":"1531","DOI":"10.1177\/0956797615594620","article-title":"Tweeting from left to right: Is online political communication more than an echo chamber?","volume":"26","author":"Barber\u00e1","year":"2015","journal-title":"Psychological Science"},{"issue":"4","key":"2021080513412980500_zmab002-B3","doi-asserted-by":"crossref","first-page":"594","DOI":"10.1080\/10584609.2014.986349","article-title":"Social mobilization and the networked public sphere: Mapping the SOPA-PIPA debate","volume":"32","author":"Benkler","year":"2015","journal-title":"Political Communication"},{"key":"2021080513412980500_zmab002-B4","first-page":"113","author":"Blei","year":"2006"},{"key":"2021080513412980500_zmab002-B5","first-page":"587","volume-title":"International encyclopedia of civil society","author":"Brainard","year":"2009"},{"issue":"2","key":"2021080513412980500_zmab002-B6","doi-asserted-by":"crossref","first-page":"497","DOI":"10.1177\/1077699018769906","article-title":"Read all about it: The politicization of \u201cfake news\u201d on Twitter","volume":"95","author":"Brummette","year":"2018","journal-title":"Journalism & Mass Communication Quarterly"},{"issue":"4","key":"2021080513412980500_zmab002-B7","doi-asserted-by":"crossref","first-page":"378","DOI":"10.1080\/19331681.2018.1519480","article-title":"The \u201cmutual ignoring\u201d mechanism of cyberbalkanization: Triangulating observational data analysis and agent-based modeling","volume":"15","author":"Chan","year":"2018","journal-title":"Journal of Information Technology & Politics"},{"issue":"2","key":"2021080513412980500_zmab002-B8","doi-asserted-by":"crossref","first-page":"317","DOI":"10.1111\/jcom.12084","article-title":"Echo chamber or public sphere? 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